650cc's

[04srt-4's!nEvErHiDe!]

Alright getting back into my custom fuel system, I am just wondering if 650s will be enough to push a stage 2 50 trim at around 25psi, also running a custom Porsche pump slight gph higher than a walbro with -6 lines. Or go 750s? Also to lazy to search on my iPhone thanks

[lyncoo]

750s.

[04srt-4's!nEvErHiDe!]

Alright cool any other opinions I just don't want to be stuck with too big of injectors, but I suppose I could always lower the fuel pressure

[lyncoo]

you got something to control fuel

[04srt-4's!nEvErHiDe!]

Fpr and safc

[lyncoo]

good deal.

[04srt-4's!nEvErHiDe!]

So still go with 750s??

[lyncoo]

Quote: Originally Posted by 04srt-4's!nEvErHiDe!

So still go with 750s??

what kind of fpr do you have. you will need a 255 fuel pump also

[04srt-4's!nEvErHiDe!]

I am running a 277 inline porsche pump, if I go with rc's then 38, if I go with DW then around stock 58

[Gringoloco]

Quote: Originally Posted by 04srt-4's!nEvErHiDe!

I am running a 277 inline porsche pump, if I go with rc's then 38, if I go with DW then around stock 58

DW and RC's are both rated at 3 bar (43.5psi), so why would you keep stock fuel pressure with the DW's? You will be running pig rich if you run them at 58psi base pressure! And I wouldn't recommend running below 40psi for base fuel pressure, you will most likely run into normal driveability issues. I would keep it at 40-43psi at the lowest. But if you want to run that level of boost, you will need 750's. You can run the 650's but will run out of fuel towards the middle-top range, unless you turn the pressure up higher on the fpr (60psi max, I wouldn't push it past that). But your injectors will be running higher duty %, etc. So it is easier to pull fuel than try to compensate for lack of. 750's are the best injector setup for a 50 trim imo

[mole']

750s man

[04srt-4's!nEvErHiDe!]

Thanks for the info I thought that the dw were meant to be ran at the stock fp